I have ADHD, and my doctor seems sure that I have Asperger's, although I've never been officially diagnosed. I've managed well enough though, and I'd say I'm a completely normal person, and I know for a fact you'd never guess I had any issues if I never told you.
It does makes certain social situations a little bit more difficult, and I relied 100% of medication to survive school. I tried to stop taking it on several occasions, and I just couldn't do schoolwork anymore. Although I haven't taken it for the last two years, as I haven't been in school. I really don't need it for things that don't require a huge amount of thought, so I wouldn't need it at work.
The really annoying thing about Ritalin is that the more you take of it, the less effective it gets, so about half way through the school year, it's basically like I'm not taking it at all... but at the same time, if I have been taking it, and stop suddenly, my ADHD gets severely worse. So, now that I've been off of it for 2 years, I'm actually wondering if I need it at all, because I just spent the last 5 days working 10+ hours straight on a game that I'm making(and plan to continue doing that), which is hard work, that requires a lot of thought. Had I tried to do that while I was dependent on Ritalin, it would have been impossible, even if I did take the medication, because it only lasts about 2 hours.
So yeah, Ritalin sucks, I know. Stop making fun of me for having to take it. lol
As far as Aspergers... I hate talking on phones for some reason. Like, I'm almost afraid of them. That's about all I can think of, so I'm not 100% sure I agree with my doctor. (Though it does tend to increase intelligence, at the cost of social skills, which is probably true for me, although I generally don't have any problems with in-person social situations. And hey, Bill Gates apparently has it, so it can't be that bad. :P)